Ultrafine diamond powder particle multi-stage classifier and classification method

Abstract

The invention relates to a multistage classifier and a classification method of superfine diamond micro-powder particles. The multistage classifier and the classification method can precisely classify particle sizes of the superfine diamond micro-powder particles within a narrow range. The multistage classifier is formed by combining a mixing tower, a classifier part, a circulation device and an automatic program control system, wherein the mixing tower is internally provided with a stirring device and communicated with a bottom feed nozzle of the classifier part; the mixing tower is communicated with a material bearing box via a return pipeline; the classifier part comprises a head component, a rotating drum component and a motor driving component; the rotating drum component is a rotating drum internally equipped with a material liquid cavity; a supernate outlet, a coarse material liquid outlet and a feed nozzle are formed in the rotating drum; the head component comprises a head and a head spindle; the motor driving component comprises a classifier variable-frequency motor; the circulation device comprises the material bearing box and a circulation pump; the material bearing box recovers material liquid to be selected from the classifier part; and the circulation pump conveys the material liquid back to the mixing tower. The classifier covers the shortages of a too wide particle size classification range of superfine diamond micro-powder and presence of large particles in the micro-powder at home; the current superfine diamond micro-powder product structure is perfected, the classification efficiency is improved, and the classifier is originated at home for particle size classification of the superfine diamond micro-powder.

Description

technical field [0001] The invention relates to a multi-stage classifier and a classification method for superfine diamond micropowder particles capable of accurately classifying ultrafine diamond micropowder particles within a narrow range of particle sizes. Background technique [0002] Whether it is natural or artificial diamond powder, it is a superhard fine abrasive in the world today. With the development of high technology, it is more and more widely used in various industrial sectors. Since artificial gold stones were put into industrial scale production, the industrial diamond consumed by western industrialized countries is about 100 million carats, of which the consumption of diamond micropowder is close to 10%, and the grinding capacity of diamond is 1.25 times larger than that of cubic boron nitride. 2. 85 to 3. 57 times larger than silicon carbide, 6. 25 to 7. 14 times larger than white corundum. Therefore, diamond micropowder, as a superhard abrasive, has an ...

AI Technical Summary

Problems solved by technology

How to eliminate these defects mainly depends on four factors: the uniformity of the particle size of the diamond powder, the particle shape of the diamond powder, the mixing ratio and purity, and the carrier chemistry. Fine, the particle size range is getting narrower and narrower, but the low accuracy of ultra-fine powder particle size classification has always been the bottleneck restricting the development of superhard material tools in China. Many domestic companies have been working hard on research for many years, but the effect has not been ideal

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